package com.example.day16.ex06;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;

public class CollectionsDemo02 {
    public static void main(String[] args) {
        ArrayList<Student>array=new ArrayList<>();
        Student s1=new Student("张三",18);
        Student s2=new Student("李四",20);
        Student s3=new Student("王五",22);
        Student s4=new Student("赵六",24);
        array.add(s1);
        array.add(s2);
        array.add(s3);
        array.add(s4);
        Collections.sort(array, new Comparator<Student>() {
            @Override
            public int compare(Student s1, Student s2) {
                int num=s1.getAge()-s2.getAge();
                int num2=num==0?s1.getName().compareTo(s2.getName()):num;
                return num2;
            }
        });
        for (Student s : array) {
            System.out.println(s.getName()+","+s.getAge());
        }
    }
}
